Historia de los medios de comunicacion

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Bolivarian Republic of Venezuela
Santa Maria College
Lecture: English IV
Teacher: Ruben Cisneros


Gesaria Lapietra Claro
C.I. 18.728.247

Caracas February 3, 2011
TV stands for television, a telecommunication medium for transmitting and receiving moving images and sound.
TV or Television may also refer to:
• Television set, a device used to view televisionbroadcasts
• Analog television an older method of Television transmission & design
• Digital television a modern method of transmitting television images
A television channel is a physical or virtual channel over which a television station or television network is distributed. For example, in North America, "channel 2" refers to the broadcast or cable band of 54 to 60 MHz, with carrierfrequencies of 55.25 MHz for NTSC analog video (VSB) and 59.75 MHz for analog audio (FM), or 55.31 MHz for digital ATSC (8VSB). Channels may be shared by many different television stations or cable-distributed channels depending on the location and service provider.
A television program (television programme in the United Kingdom, Ireland and many Commonwealth countries) or television show is a segmentof content broadcast on television. It may be a one-off broadcast or part of a periodically recurring television series.
A television series that is intended to be broadcast as a finite number of episodes is usually called a miniseries or serial (although the latter term also has other meanings). A short run lasting less than a year is known in the United States and Canada as a season and in theUnited Kingdom and (not necessarily) the rest of the PAL countries as a series. This season or series usually consists of 12–26 installments in the United States, but in the United Kingdom there is no defined length. United States industry practice tends to favor longer seasons than those of some other countries.
A single instance of a program is called an episode, although particularly in theUSA this is sometimes also called a "show" or "program", and in Great Britain and Ireland a "programme". A one-off broadcast may, again particularly in the USA and USA-influenced countries, be called a "special", or particularly in the UK a "special episode". A television movie or in the UK a television film ("made-for-TV" movie) is a film that is initially broadcast on television rather thanreleased in cinemas or direct-to-video, although many successful television movies are later released on DVD.
Today, advertisements play a role in most television programming, such that each hour of programming can contain up to 15 minutes of advertisements in some countries. By contrast, being publicly funded, the British Broadcasting Corporation (BBC) in the United Kingdom does not runadvertisements, except to trail its own programmes. Its promotions appear between and near the end of programmes but not in the middle of them, much like the Public Broadcasting Service (PBS) in the United States and the Australian Broadcasting Corporation (ABC) in Australia. The number of commercial interruptions can also vary. For instance, Japanese television has fewer and longer commercial breaks, whileAmerican television has several spread throughout the program. This requires writers to provide a smooth transition, as well as keep the audience from switching channels.


The executive producer, often the show's creator, is in charge of running the show. They pick crew and cast (subject to approval by the network), approve and often write series plots, and sometimes write and directmajor episodes. Various other producers help to ensure that the show always runs smoothly.
As with films or other media production, production of an individual episode can be divided into three parts:


Pre-production begins when a script is approved. A director is chosen to plan the episode's final look.
Pre-production tasks include storyboarding, construction of sets,...
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